基于层次分析法的江苏宁镇山脉乡土树种评价

为了筛选适宜南京地区的优良城市绿化树种,在野外调查和问卷调查的基础上,利用层次分析法(AHP)建立江苏宁镇山脉乡土树种评价体系,对该区域的乡土树种进行客观的定量分析。结果表明:(1)乡土树种作为城市绿化树种应首先考虑抗逆性,其次是生态价值、美学价值和生物学特性;(2)参与评价的41种宁镇山脉乡土树种可分为4类,其中I类乡土树种应大力推广应用,Ⅱ类乡土树种可作为森林城市树种多样性的有益补充,Ⅲ类和Ⅳ类乡土树种作为城市绿化树种仍有一定的差距。13种Ⅰ类乡土树种作为城市绿化树种具有良好的应用前景。

Evaluation of Native Trees Species in Ningzhen Mountains of Jiangsu Province by Analytic Hierarchy Process

To find the appropriate urban trees for Nanjing city, native tree species of Ningzhen mountain of Jiangsu Province were evaluated objectively and quantificationally based on the field investigation and questionnaire survey with the method of analytic hierarchy process (AHP). Results showed that: (1) as urban landscape trees, the characteristic of resistance of native tree species should be considered firstly, followed by ecological functions, aesthetic value and biological feature. (2) Forty one species of native trees distributed in Ningzhen mountain were classified into four groups. Native tree species of Group-I could be applied in the urban environment widely, and Group-II was deemed to complement helpfully for the diversity of urban forest. However, there was still a certain gap for Group-III and Group-IV as urban tree. We draw the conclusion that 13 species of Group-I native trees had a broad application prospect.